DIES

1
DIES
Purpose Dies are used to cut external threads on
round stock. Dies are selected by diameter and
number of threads per inch.
Fig 2 - Location In Machine Shop Cabinet 3
Fig 1 - Location of dies In Senior Design Suite

• Instructions
• Select die according to diameter and threads
  per inch of the desired thread, a die handle, and
  allen wrenches appropriate to the die and handle.
• If the die has an adjusting screw ensure that
  it is correctly set using a fastener of the same
  thread size.
• Ensure stock is cut to the correct major
  diameter.
• Chamfer ends of the stock where the threads are
  to be cut.
• Select an oversized piece of round stock such
  that it will not enter into the cutting surfaces
  of the die.
• Chuck up the stock to be cut and the oversize
  stock into a lathe as shown in figures 4 and 5
  below. DO NOT ROTATE THE LATHE WITH POWER.
• Ensure the starting side of the die touches the
  stock to be cut. The starting side is labeled or
  can be determined by its greater chamfer length
  on the cutting surface.
• Apply cutting oil to the die and stock.
• While applying pressure turn the die in ½ turn
  cutting increments followed by backing ¼ turn to
  break the chips created.

Vendor McMaster-Carr www.mcmaster.com
Fig 3 Die and Handle
Fig 4 Setup in Lathe
Fig 5 Setup in Lathe